DA: Crabtree won’t be charged

San Francisco prosecutors will not file charges against 49ers wide receiver Michael Crabtree, who was under investigation after a woman accused him of sexual assault, District Attorney George Gascón said Friday.

Last week Crabtree, 25, was accused of sexually assaulting a woman in a San Francisco hotel room in the early hours of Sunday, Jan. 13, following the team’s victory over the Green Bay Packers in a playoff game.

“The San Francisco Police Department special victims unit completed and submitted a thorough investigation of the allegations against Michael Crabtree,” Gascón said in a statement. “Following a review of all the evidence, my office has determined that no charges will be filed against Michael Crabtree at this time.”

Crabtree cooperated with the investigation and was interviewed by police, authorities said.

An anonymous law enforcement source told Chronicle columnists Phillip Matier and Andrew Ross earlier this week that three women, including the one who lodged the complaint, joined Crabtree in a room at the hotel. The other two women said Crabtree did not assault anyone, and police failed to find physical evidence of an attack, the source said.

Crabtree, the 49ers lead receiver, became the first San Francisco wide receiver to log more than 1,000 yards in a season since Terrell Owens in 2003, with a career-best 1,105 yards receiving.

No one from the 49ers, who are preparing for the Super Bowl on Feb. 3, could be reached for comment.